# Alias

![](https://1839001309-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MBFTVMf7L6S67HOuqVC%2F-MScnwvubG4L68mVYHkQ%2F-MScqjgtlll0LUSXw-oL%2Falias.png?alt=media\&token=8d1b8bfc-717a-43f2-b498-8d92af09034d)

Alias is an alternative Datastream name which can be changed by the end-user. For example, it can be used by voice assistants like Amazon Echo (Alexa) and Google Home Assistant .

You can only use letters, digits and spaces. No other characters are allowed

{% hint style="warning" %}
Duplicate aliases are not allowed.
{% endhint %}